diff --git a/ui/src/shared/constants/graphColorPalettes.js b/ui/src/shared/constants/graphColorPalettes.js
index ce6b21a03b..079f45c023 100644
--- a/ui/src/shared/constants/graphColorPalettes.js
+++ b/ui/src/shared/constants/graphColorPalettes.js
@@ -200,7 +200,7 @@ export const LINE_COLOR_SCALES = [
 })
 
 export const validateLineColors = colors => {
-  if (!colors) {
+  if (!colors || colors.length === 0) {
     return DEFAULT_LINE_COLORS
   }